Most of all cell enzymes are proteins
Answer:
Membrane receptor......or just receptor I dont know which one
It is an autotroph. Think of a trough that a horse would eat of, then take the word auto. It's something that automatically feeds itself.
False
Sperm receptor is also known
as zona pellucida sperm –binding protein 3 (ZP-3). It is a ZP module protein in human
that encode by the ZP3 gene. Thus, ZP3 is the receptor that is found in the
zona pellucida that binds the sperm at the <span>beginning</span><span> of fertilization.</span>
Answer:
A. Antibodies to A and B are present in the red cells.
Explanation:
AB positive is a blood type with the presence of A and B antibodies in the red blood cells, with the absence of A and B antigens. This blood type is referred to as the “universal recipient” because individuals who are AB positive can receive from all blood types including O, A and B. AB positive is only able to donate blood to patients who are AB positive AB is referred to the rarest blood type.
Therefore Fred's red blood cells have A and B antibodies.